When you say that only the drum tracks are saved to a MIDI file, this is usually an indication that the style you are using contains Realtracks and not MIDI tracks.

Realtracks are audio tracks, not MIDI tracks which is why they do not save to MIDI files.

To check if your tracks are Realtracks, BIAB uses a color coding system. Realtracks have GREEN tracks names and MIDI tracks have YELLOW or PALE BLUE track names. These colours are in the mixer and across the top menu.

On the image below, Bass, Drums, Guitar, Strings are green. This means they are Realtracks.

The Piano is light blue so this is a MIDI Supertrack.

The Melody is yellow, so this is a MIDI track.

If this file were saved as a MIDI only the Piano, Melody and Drums will save. The reason the Drums save as MIDI even though they're a Realtrack is because all styles have an underlying MIDI drum track. This is not true of the other Realtracks, though.

Hope this helps.
Noel

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